The timber pines of the southern United States Mohr, Charles (Charles Theodore), 1824-1901 creator Roth, Filibert, 1858-1925 contributor Fernow, B. E. (Bernhard Eduard), 1851-1923 contributor text book Washington Govt. Print. Off 1896 1896
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ENG Frick, Henry Clay II, 2007. Pinus Southern States Wood Bulletin (United States. Forest Service), no. 13 https://www.biodiversitylibrary.org/bibliography/15350 5935451 10.5962/bhl.title.15350 COO